GE 489 Communications Manual page 48

44
Table CG–2: Data Formats (Sheet 3 of 14)
CODE TYPE
TWO 8-BIT CHARACTERS
16 bits
PACKED INTO 16-BIT UNSIGNED
MSB First Character
F22
LSB Second Character
Example: String 'AB' stored as 4142 hex.
32 bits TIME FORMAT FOR BROADCAST
st
Hours (0 to 23)
1 byte
nd
Minutes (0 to 59)
2 byte
F24
Milliseconds (0 to 59999)
rd th
3 & 4 bytes
Note: Clock resolution limited to 0.01 sec
Example: 1:15:48:572 stored as 17808828 (i.e., 1
BDBC)
16 bits ASSIGN ALARM/TRIP RELAYS
Bit 0 Relay 1
Bit 1 Relay 2
F50 Bit 2 Relay 3
Bit 3 Relay 4
Bit 4 Relay 5
Bits 5 to 15 Not used
Unsigned
TEMPERATURE DISPLAY UNITS
16 bit integer
F100
0 Celsius
1 Fahrenheit
Unsigned
RS485 BAUD RATE
16 bit integer
0 300 baud
1 1200 baud
F101
2 2400 baud
3 4800 baud
4 9600 baud
5 19200 baud
Unsigned
RS485 PARITY
16 bit integer
0 None
F102
1 Odd
2 Even
Unsigned
NO/YES SELECTION
16 bit integer
F103
0 No
1 Yes
Unsigned
GROUND CT TYPE
16 bit integer
0 None
F104
1 1 A Secondary
2 50/0.025 Ground CT
3 5 A Secondary
Unsigned
OFF/ON SELECTION
16 bit integer
F105
0 Off
1 On
Unsigned
VOLTAGE TRANSFORMER CONNECTION TYPE
16 bit integer
0 None
F106
1 Open Delta
2 Wye
489 GENERATOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE
DEFINITION
st nd
word 010F, 2 word